To make the shaft turn, the muscles work in concert, rhythmically contracting, one pair after another.
为了使传动轴转动，所有肌肉必须协调一致，一组接一组有节奏地收缩。
2
After assembly, move the pump shaft with hand, it should be smooth and uniform without touch. Disassembly can be made with the steps contrary to above ones.
装配完成后，用手转动泵轴，没有擦碰现象，转动比较轻滑均匀即可，拆卸可按上述装配顺序相反的进行。
3
Aligning intermediate shaft and propeller shaftafter launching.